package testadvance;

import java.util.Arrays;

/**
 * @author oldliu
 * @since 1.0
 */
public class SystemTEst {
    public static void main(String[] args) {
        //System没有公开的构造方法
//        System.out.println();
////        System.out.println();
////        System.in;
        //数组扩容
        int a1[]={1,3,5,6,8,81,100};
        int a2[]=new int[20];
        System.arraycopy(a1,0,a2,10,a1.length);
        System.out.println(Arrays.toString(a2));
        long time=System.currentTimeMillis();
        System.out.println(time+" is time");
        for(int i=1;i<100000;i++){
            System.out.println(i);
            if(i==10)
                System.exit(0);
        }
    }
}
